Yam is a starchy root vegetable commonly grown in Africa, Asia, and the Caribbean. It has rough, brown skin and white, yellow, or purple flesh, depending on the variety. Yams are a staple food in many cultures, especially in West Africa, where they are used to make dishes like pounded yam, yam porridge, and fried yam. They are rich in carbohydrates and provide essential nutrients like fiber, vitamins, and minerals.